Railway-switch.



No. 662,0l6. Patented Nov. 20, I900.

H. OSHEA.

RAILWAY SWlTCH.

(Application filed Dec. 26, 1899.)

(N 0 M odal WITNESSES: j INVEHTDH ,mmwi j 3403M, 772 6 1M! I .Qawwfiu MATTORNEY.

.ATENT FFICE.

HENRY OSI'IEA, OF JOHNSTOWN, PENNSYLVANIA, ASSIGNOR TO THE LORAIN STEELCOMPANY, OF PENNSYLVANIA.

RAILWAY-SWITCH.

SPECIFICATION forming part of Letters Patent N 0. 662,016, datedNovember 20, 1900.

Application filed December 28. 1899. serial No. 741,807. (No model.)

To all whom, it may concern:

Be it k nown that LHENRY OSHEA,of Johnstown, in the county of Oambriaand State of Pennsylvania, have invented a new and useful Improvement inRailway-Switches, of which the following is a full, clear, and exactdescription, reference being had to the accompanying drawings, whichform a part of this specification.

My invention relates to railway-switches, and more particularly toswitches of that type wherein there is a tongue or point swiveled to thefoundation structure at its heel end by a depending pin or pintle.

The object of the invention is mainly to provide an improvedconstruction and seating of the pin or pintle by which looseness due tothe wear on the pin may be largely prevented, thereby reducing thetendency of the tongue or point to shift under the action of passingcar-wheels.

With this object in view myinvention consists in a switch tongue orpoint having-a pin or piutle of frusto-conical or tapered form adaptedto seat in a correspondingly-tapered socket or bearing, so that any wearwhich takes place between the bearing-surfacesof the pin and socket willto a considerable extent be compensated for by a deeper seating of thepin in the socket, thus maintaining a proper bearing fit between theparts.

The invention also consists in the novel construction and combination ofparts, all as herein described, and pointed out in the appended claims,reference being bad to the accom panying drawings, in which Figure 1 isa plan view of a tongue-switch of the type described. Fig. 2 is avertical longitudinal section of a portion of the same on a largerscale, and Fig. 3 is a side elevation of the socket or bearing in whichthe tongue-pin is seated.

Although my invention is applicable to other constructions, I prefer toemploy it in connection with a tongue-switch of the constructiondescribed and claimed in the patent to A. J. Moxham, No. 520,694 of May29, 1894:, in which the foundation structure is provided with a sleeveor bushing to receive the tongue or pintle, said sleeve or bushing beingsecured by means of some suitable reformed with corresponding steps 0.

taining material placed around and between it and the walls of thepocket in which it is seated.

In the drawings the letter A designates the foundation structure or bodyof the switch, and B the movable tongue pivoted on the pin or pintle C.

D is a bushing or sleeve, preferably of caststeel, which is seated in apocket in the structure A, and E is retaining material, such as spelteror brimstone, which is poured around the bushing or sleeve.

The pin Ois preferably made separate from the tongue B, in which it issecured by a shank or stud portion 1). The bearing portion of the pin ismade in the form of a frustum of a cone inverted, and the sleeve orbushing D is bored out with a corresponding taper to form a neat bearingfit therefor.

19' is a fillet which joins the bearing portion of the pin to the studor shank b.

12 indicates a slight clearance between the bushing and the under sideof the switchtongue.

The exterior of the bushing is formed with a series of stepped portions01, each of which is of increasing diameter from the bottom upward andterminates in a horizontal face 01', which forms a ledge or shoulderaround the bushing. The walls of the seating-pocket are In thewedge-shaped annular spaces thus formed is poured the retaining materialE. Inasmuch as the spaces are considerably wider at the bottom than atthe top, it will be readily seen that the bushing is securely retainedin place. It will also be readily seen that considerable wear may occurbetween the pin and the bushing without destroying the bearing fitbetween the two. The diameter of the upper end of the bearing portion ofthe pin may be considerably larger than the diameter of the straightpins heretofore used without increasing the exterior diameter of thesleeve or bushing, thus considerably increasing the area ofbearing-surface. It will also be observed that the upper end ofthe bodyof the pin forms a broad shoulder whose peripheral edge is coincidentwith the lower peripheral edge of the rounded heel portion of thetongue, the latter being thereby guarded against I claim, and desire tosecure by Letters Patent, is-

l. The combination with a switch tongue or point, and a seating orfoundation structure therefor having a bushing formed with a tapered orfrusto'conical bearing-socket, of a pin or pintle of corresponding formfitting the said socket, and secured in said tongue or point by areduced cylindric shank at its upper end, said pin having an initialprojection at its upper end above the top of said socket.

2. In a tongue-switcl1,the combination with a foundation structure, anda sleeve or bushing secured therein, of a switch-tongue having a taperedor frusto-conical pin secured in its heel portion and bearing in thesaid bushing, the upper end of the body of said pin forming a broadshoulder extending to the rear end of the tongue and supporting its heelagainst grinding contact with its seat.

3. In a switch-piece, the combination with the foundation structure orbody formed with a pocket therein, of a sleeve or bushing seated in saidpocket, and retaining material between the sleeve or bushing and thewalls of the pocket, said walls and the exterior surface of the bushinghaving corresponding op posite and oppositely-directed steps or oifsetswith intermediate tapered portions forming spaces of upwardly-decreasingwidth to receive said retaining material, substantially as described.

In testimony whereof I have afiixed my signature in presence of twowitnesses.

HENRY OSHEA.

Witnesses:

MYRTLE E. SHARPE, H. W. SMITH.

